Company Informations
Hunan Yunbang Pharmaceutical Co., Ltd. (Yunbangpharm) located in Changsha High-tech Industrial Park, Hunan. It is a high-tech enterprise specializing in the research and development, production and sales of Pharmaceutical raw materials, Pharmaceutical intermediates(API) and Fine chemicals. Based in China, Yunbangpharm has been providing suitable solutions for many domestic,foreign pharmaceutical companies and traders. Excellent quality, good reputation and authentic price have won the praise of the majority of customers.
The company adheres to the corporate tenet of "We do not produce medicines, but help pharmaceutical companies make good medicines".
We can provide customers with customized processing, research and development services;
We can develop high-end Pharmaceutical and chemical products with high technical difficulties,high barriers and unique production processes;
We can provide 100 grams Grade, kilograms, and hundred kilograms of raw material pharmaceutical intermediates and other products.
We can perform -100°C to 300°C reaction.
R&D strength is the company's core competitiveness.Yunbangpharm has maintains a good cooperation relationship with many Universities and Research institutes locally, which can quickly transform R&D results into industrial production.
Our goal : To achieve the integrated upgrade of Pharmaceutical intermediates, raw materials and high-end chemical products, adhere to "serving pharmaceutical companies, creating our brands" to provide customers with high-quality and low-cost pharmaceutical and chemical products, realizing Win-win cooperation and common development.
FAQ
1:Can I get some samples before bulk order?
A: Most products provide free samples, but the shipping cost be paid by customers.
2: What's your MOQ?
A: We can have a discussion.
3: Which kind of payment terms do you accept?
A: PI will be sent first after confirmation of order,enclosed our bank information.Payment by T/T, Western Union,D/P, ETC.
4.How to place an order?
A: You can contact me through Trademanager, WhatsApp, Email and other contact methods, tell me the product and quantity you need, and then we will give you a quote.
5:How about your delivery time?
A: Generally, it will take 3 to 5 days after receiving your advance payment.
6:How do you treat quality complaint?
A: First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.
Product Description
Bromophenol blue is present as a sulfonated hydroxyquinone in acidic aqueous solutions. It is also known as tetrabromophenolsulfonphthalein. Bromophenol Blue is a pH indicator and a dye appears a strong blue color. It has a slightly negative charge and will migrate in the same direction as DNA, allowing the user to monitor the progress of molecules moving through the gel. The rate of migration varies with gel composition.
Application
Bromophenol Blue is used as a tracking dye in DNA, RNA (agarose) and protein (polyacrylamide) gel electrophoresis. It has been used in the preparation of protein samples for western blotting analysis. Bromophenol blue migrates at approximately the same rate as 300-500bp DNA in agarose gel and at the buffer front in protein polyacrylamide gels.It has also been known for its use as a vital stain to probe the blood-brain barrier.
Product analysis
| Product Name: |
Bromophenol Blue |
| Synonyms: |
BROMPHENOL BLUE, FREE ACID, REAGENT (ACS)BROMPHENOL BLUE, FREE ACID, REAGENT (ACS)BROMPHENOL BLUE, FREE ACID, REAGENT (ACS);4,4'-(1,1-Dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2,6-dibromo-phenol];Bromophenol blue (BPB), AR;BROMOPHENOL BLUE INDICATOR, REAG. PH. EU R.;BROMOPHENOL BLUE SOLUTION, ~1% IN N,N-DI METHYLFORMAMIDE;BROMOPHENOL BLUE, A.C.S. REAGENT;BROMOPHENOL BLUE SOLUTION, 100 ML;BROMOPHENOL BLUE SOLUTION ACID-BASE & |
| CAS: |
115-39-9 |
| MF: |
C19H10Br4O5S |
| MW: |
669.96 |
| EINECS: |
204-086-2 |
| Product Categories: |
Sulfonephthalein;reagent;Organics;Analytical Chemistry;Indicator (pH);pH Indicators;Indicator SolutionsAnalytical Reagents;Indicators;Microscopy Reagents;Stains and Dyes;Titration |
| Mol File: |
115-39-9.mol |
| Bromophenol Blue Chemical Properties |
| Melting point |
273 °C |
| density |
0.954 g/mL at 20 °C |
| Fp |
58 °C |
| storage temp. |
Store at RT. |
| solubility |
soluble10mg/mL |
| pka |
3.85(at 25ºC) |
| form |
Solid |
| Boiling point |
605.6±55.0 °C(Predicted) |
| color |
Reddish-violet |
| Odor |
Odorless |
| PH |
pH : 3.0~4.6 |
| PH Range |
3(Yellow)-4.6(Blue) 6(yellow)-7.6(blue) |
| λmax |
598nm, 592nm, 436nm, 422nm, 273nm |
| Merck |
14,1444 |
| BRN |
61698 |
| Stability: |
Stable. Incompatible with strong oxidizing agents. |
| Major Application |
Nanotechnology, semiconductors, sol-gel matrix, fuel cells, display device, paints, packaging system, diapers, contact lens, determining nucleic acids, in saliva, water alkalinity, preserving genetic materials, detecting bacteria, vaginal infection test method |
| InChIKey |
UDSAIICHUKSCKT-UHFFFAOYSA-N |
| LogP |
6.880 (est) |
| CAS DataBase Reference |
115-39-9(CAS DataBase Reference) |
| EPA Substance Registry System |
Bromophenol blue (115-39-9) |
| Hazard Codes |
T,Xn |
| Risk Statements |
61-20/21-36-36/37/38-20/21/22 |
| Safety Statements |
53-45-24/25-22-36-26 |
| RIDADR |
UN 2265 3/PG 3 |
| WGK Germany |
3 |
| RTECS |
SJ7453000 |
| TSCA |
Yes |
| HazardClass |
3 |
| PackingGroup |
III |
| HS Code |
29349990 |
| Hazardous Substances Data |
115-39-9(Hazardous Substances Data) |
| Bromophenol Blue Usage And Synthesis |
| Chemical Properties |
Bromophenol Blue is pink or red powder, soluble in ethanol, benzene, ether and other organic solvents, slightly soluble in water, the aqueous solution is yellow, and blue-purple in alkaline solution. It is mainly used as an acid-base indicator, the pH discoloration range is 3.0 to 4.6, and the color changes from yellow to green to blue-violet. |
| Uses |
Bromophenol blue is used as a tracking dye in electrophoresis, as a color marker in gel electrophoresis and polyacrylamide gel electrophoresis. As a biological stain, it plays an important role to stain proteins and nucleic acids. It acts an intermediate and an acid-base indicator in the pH range 3.0 to 4.6. |
| Biotechnological Applications |
Bromophenol blue is present as a sulfonated hydroxyquinone in acidic aqueous solutions. It is also known as tetrabromophenolsulfonphthalein. Bromophenol Blue is a pH indicator and a dye appears a strong blue color. It has a slightly negative charge and will migrate in the same direction as DNA, allowing the user to monitor the progress of molecules moving through the gel. The rate of migration varies with gel composition.
Bromophenol Blue is used as a tracking dye in DNA, RNA (agarose) and protein (polyacrylamide) gel electrophoresis. It has been used in the preparation of protein samples for western blotting analysis. Bromophenol blue migrates at approximately the same rate as 300-500bp DNA in agarose gel and at the buffer front in protein polyacrylamide gels.It has also been known for its use as a vital stain to probe the blood-brain barrier. |
| storage |
Room temperature |
| Purification Methods |
Crystallise the dye from *C6H6 or Me2CO/AcOH, and dry it in air. It is an indicator: at pH 3.0 it is yellow and it is purple at pH 4.6. [Beilstein 19/3 V 458.] |
Detailed Photos
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